From 0002b7c334e2658356287fb698c8a44bf1677a52 Mon Sep 17 00:00:00 2001
From: Bernhard Froehlich <decke@bluelife.at>
Date: Fri, 14 Dec 2018 11:20:58 +0000
Subject: [PATCH] Format timestamp according to RFC 5322 as described in RFC
 5321 (chapter 4.4):

Time-stamp-line = "Received:" FWS Stamp <CRLF>
Stamp = From-domain By-domain Opt-info [CFWS] ";"
FWS date-time
; where "date-time" is as defined in RFC 5322 [4]
; but the "obs-" forms, especially two-digit
; years, are prohibited in SMTP and MUST NOT be used.
...
---
 envelope.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/envelope.go b/envelope.go
index 6e427e8..052e5da 100644
--- a/envelope.go
+++ b/envelope.go
@@ -46,7 +46,7 @@ func (env *Envelope) AddReceivedLine(peer Peer) {
 		peer.ServerName,
 		peer.Protocol,
 		tlsDetails,
-		time.Now().Format("Mon Jan 2 15:04:05 -0700 2006"),
+		time.Now().Format("Mon, 02 Jan 2006 15:04:05 -0700 (MST)"),
 	)))
 
 	env.Data = append(env.Data, line...)